/Engine/Source/Runtime/LiveLinkInterface/Public/ILiveLinkClient.h
Whether a subject support a particular role, either directly or through a translator
bool DoesSubjectSupportsRole_AnyThread ( [FLiveLinkSubjectName](API\Runtime\LiveLinkInterface\FLiveLinkSubjectName) SubjectName, [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [ULiveLinkRole](API\Runtime\LiveLinkInterface\ULiveLinkRole) > SupportedRole ) const